Chemical Elements 13–18

Questions

1. Read a table What is the symbol for sulfur?

   Cl S P Si
2. Read a table Which element has the symbol Cl?

   Chlorine Phosphorus Argon Aluminium
3. Read a table What is the atomic number of argon?

   18 17 16 14
4. Vocabulary What is an atomic number?

   how heavy a gram of the element is the number of protons in each atom of an element how many letters are in its symbol the year an element was found
5. Text features What does each row of the table show?

   the facts for one element the title of the table one fact for every item the source of the facts

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